It is the time of year when many of our small tributary streams are at or approaching base level flows. This reduces overhead cover, so combined with warm late summer and early autumn daytime temperatures, many resident trout begin moving downstream to larger waters which provide better overhead cover and cooler temperatures. This does not impact our “larger” small streams, such as Big Lost, Blackfoot, Fall, Teton and Warm Rivers as well as Birch, Bitch, Little Lost, Medicine Lodge and the larger South Fork-Palisades Reservoir tributaries. Such as Burns, Robinson, Jackknife, Lanes, Rock, and Tincup Creeks are among those seeing this migration. Thus, if you enjoy streams such as these, the best of what their smaller reaches offer with respect to fishing action will diminish as we advance into autumn.